Strainer head for tubing machines



May 2s, 1933. V, ROYLE 1,910,261

STRAINER HEAD FOR TUBING MACHINES Filed Aug. ll, 1927 3 Sheets-Sheet l INVENTOR /L ATTORNEYS May 23, 1933. v. RQYLE 1,910,261

STRAINER HEAD FOR TUBING MACHINES Filed Aug. ll, 1927 5 Sheets-Sheet 2 INVENTOR ATTORN EYS May 23, 1933. V ROYLE 1 1,910,261

STRAINER HEAD FOR TUBING MACHINES Filed Aug. 11, 1927 3 sheets-sheet 5 INVENTOR ATTORNEYS Patented May 23, 1933 Unirse STATES image1 VERNON BOYLE, F PATERSON, NEW JERSEY STRAINER kHEAD FOR TUBING MACHINES Application led August 11, 1927.

This invention relates to an improvement in strainer heads for tubing machines.

It has for an object to provide a device of this character that will adapt the machine tor satisfactory and expeditious operation upon materials of varying characteristics without producing an undue strain upon any of the parts or irregularity of operation.

Another object is to provide a device of this character which will substantially increase the output et the machine in given periods et time and with given operating power.

Another object consists in providing adevice et this character which includes means for controlling the temperature et the inner member of the strainer head.

A further object consists in providing certain improvements in the term, construction 2O and arrangement of the several parts, Whereby the above named and other objects may effectively be attained.

Machines of this kind are designed to operate upon rubber compounds, includingvarious substances, during the process et reclaimingthe rubber; and these compounds and substances diiier greatly in character and consistency. Consequently the designing of a strainer head entails problems directly re lated to the effort to construct a device of this kind which will give a large output of adequately strained' material tor aV given unit ot time and with a given expenditure. oi

5 power. My invention is calculated to enhance the capacity otl the device in these respects, as well as embodying advantages inherent in the construction.

A practical embodiment of the invention is shown in the accompanying drawings in which c Fig. 1 represents a front elevation of the strainer head;

Fig. 2 represents a longitudinal section taken in the plane of the line H-II of Fig. 1

looking in the direction of the arrows;

Fig. 3 represents a section taken in the plane of the line III-Hl of Fig. 2 looking in the direction ot the arrows;

Fig. 4 represents a section taken in the Serial No. 212,298.

plane of the line IV-IV of Fig. 2 looking in the direction of the arrows;

Fig. 5 represents an enlarged detail view, partly in elevation and partly in section, of the inner member ot the strainer head;

Fig. 6 represents an enlarged detail longitudinal section taken in the plane et the line VI-Vl of Fig. 4 looking in the direction of the arrows; and Y Fig. 7 represents a similar view taken in the 60 plane ot the line vll-VII of Fig. 4: looking in the direction ot the arrows.

The head of the tubing machine may be of any well known or approved form. Its front portion only is shown, and is represented in the drawings by 1. The usual screw or plodder 2 is housed within the liner 3 of the tubing machine head, in the usual way, and projects therefrom for cooperation with the strainer head.

A set et tour stud bolts 4 stand out from the tubing machine head 1, and are intended to register with holes formed in the tace plate 5 of the strainer head. Nuts 6 are provided for threading en to the bolts 4 in order to 75 secure the face plate 5, and hence the strainer head, in position on the tubing machine.

The strainer head includes an inner member marked 7 that is shouldered at 8 to match a reduced flange 9 that projects forwardly 80 from the bore liner-3. A suitable washer 10 may be placed between the machine head l and the bore liner 3 on the one hand,.and the taceV plate V5 and inner member 7 on the other hand. Y S5 rllhe inner me1nber7 is also shouldered, as shown at 11, for engagement with a. corresponding shoulder termed inthe tace plate 5; and it will be noted that the shoulders 8 and 9U 11 of the inner member' 7 are oppositely faced. The inner member 7 is further provided with a threaded fiange 12 that mates with afthreaded flange 13 on the face plate 5. Y

As afresult of the construction just described, it will be seen that the parts are assembled by screwing the inner member 7' into the face plate 5 until the shoulder 1l firmly abuts the faceplate; after which the face plate and inner member carried thereby are secured to the machine head by the bolts 4 and nuts 6.

The device also includes means for controlling the temperature ot the inner member 7, as by the circulation therein ot a heating or cooling medium. To this end the inner member has embedded therein a series ot U-shaped tubes, one of which is denoted by 14; see Fig. 5. These tubes may be putin pla-ce'by routing or otherwise cuttingout the surface ot the inner member 7 and then covering over the tubes with strips oi'metalor other suitable material appropriately secured in place.

@ne end of each tube 14 openslinto a radialrly disposed port `15, which said kports lare flared at their outer ends and communicate with an annular channel 16 fashioned partly `in .the inner member7 and partly in the 'face plate 5. YThe-said annular channel 16 coin- .municates with a plurality of ducts 17 that,

in turn, communicate with a passage 18 circu- .larly formed in the face plate 5, which passage is intended to be ted with temperature controlling medium such, for instance. as

.short of the routed or otherwise cut lgroove formedfin the inner member 7 for receiving the tube. The said groove is plugged 'by a screw plug 19-so as to form between the said .plug and the endioi the tube 14 a little chainbei' 2O that is in communication with `a duct .partly in the tace plate 5.

2l which opens into another passage 22 that 1s formed partly in the inner member 7 and This passage v22 may be opened to air or to suitablefexhaust piping, or the like, by means-of any appropriate opening :termed m the machine head 1 or the faceplate 5.

AsA a result of .this arrangement it will be evident that the temperature controlling me tlium may be inJected into the passage 18 and,

by virtue of the connections, pass .through the`V "that a'branch ot' some one ofthe temperature controlling tubes .-14 lies -in the `wall loi" the innerj member -7 between-any given pair of rows of perliorations. Another way of ei:- pressing the same .thoughtis to note that a branch ot a temperature controlling tube lies on cach side of anygiven row otperiorations. This .provides forafthoroughand uniform control of the temperature of the inner mem` said perforations were substantially parallel "47, Emounted :above and :below the .Ihalves .'24,

ber 7 throughout substantially its entire area.

The perfor-ations 23 are preferably comparatively large and their size, as well as their elongated shape, enables rapid passage of the material from the inside to the outside of the member 7, thereby increasing the output of the machine at this juncture. The elongated shape of the perforations 23 also enables 'the desired size of the perforations to be attained without making them so wide in circumferential direction as to space the branch-es ot' the temperature controlling tubes 14 too tar apart.

It willbe seen, yby reference to Figs. 8, 4, and 5, that the side walls of the perforations 23 lic in @planes oblique to theradii'of the inner member .7. This-arrangement is of some importancel because it enables the edges of 'the said pert'orations to `cooperate with the.

screw by asort of shearing action and'thus scrape the material trom the screw. This angular disposition .of the perforations also facilitates the escape oi the .material from within the member 7, because'the material is to a certain extei'it,.rotated bythe screw, and the cl ii'pie direction ot' the Aholes does not call for such a change inthe movement of the material being forced from the 'member 7 as would be occasioned it the sides ot Vthe o a radius. The direction of rotation ofthe crew' is indicated by arrows on Figs. 3 and VZil.

The outeihmeniber,or jacket, ofthe strainer head, is composed of two Ihalves V,24, `25. Each ofthese is semi-cylindrical `in 4'form so that, .when they arefin'abutment, a cylinder zis 'formed which surrounds and isconcentric with the inner cylindricalmeniber`7.

'The halves ot 'the .outer fmember 24, 25,

"h ave hinge'lrnucliles 2G, 27 at theirireary ends which are `fitted to receive pintles `218, 29, mounted, asby cotters 80, 3l,`in lugs 32, 83,

34, 35, formed onthe front ott-liefaceplate'.

This mounting enables tthe mein'bins24,`

. 25, to be swung openorto beswung into substantial'abutment witheach other, which'latl`teristheir operative position.

In orderlirn'ily to hold-the saidhalves'24,`25 intheir closed position, .5I providelook 'bars B6, 37, which have vhinge knuckles 38, 39,1at

their rear ends, which embrace pintles 40, 411,:ifixed bycotters42, 43, yin lugs 44, 45, 46,

25, on the front of the tace plate 5.

lllheilock yb-ars are longitudinally grooved, as indicated at 48, 49, Jfor engagement with ltheadjacent.edges of the halves 24, 25, and

the side ribs-onthc lock bars, ormetl'by the presence of the groves 48, 49, are iittedito enter channels 50, 51, '52, 53, formed .inthe .fa-ces of the vsaid halves 24,25. .Tt will be noted that the outer walls lof the said grooves 50,51, 52, 53, are flared so as to 'facilitate theV` cnt-ry of the complementary parts ot'thelock bai's therein, while the opposite walls of the said grooves are shaped so as tightly to fit within the grooves 48 and 49 in the lock bars.

The outer membei` or jacket of the strainer head composed of the parts 24, 25, has its cylindrical walls perforated with a multiplicity of holes 54, and it will be observed that these holes are substantially radially disposed, that they are considerably smaller than the perforations 23 in cross-sectional area, and that they are located more closely together than are the perforations 23.

AC screen 55, cylindrical in form, is set between the inner and outer members of the strainer head, and preferably lies against the inner surface of the halves 24, 25, of the outer member. This provides adequate support for the screen, and the fact that the holes 54 in the outer member are comparatively small in cross-sectional area obviates the existence of any substantial unsupported surface of the screen which might be distorted by the force of the ejected material.

In order to support and prevent distortion of the adjacent edges of the halves 24, 25 of the outer member, I fasten upper and lower partitions 56, 57, to the upper and lower exterior walls of the inner member 7. Screws 5S, 59, serve this purpose.

The front exterior portions of the halves 24, 25 composing the outer strainer head member, are threaded for receiving a correspondingly threaded ring nut 60.

The threads connecting these parts, which are marked 61, are `slightly coned from the front toward the rear so as to increase the locking effect of the ring nut 60 which lattei', as will be evident, serves firmly to holdv the front ends of the halves 24, 25, in abutting engagement, thereby supplementing the action of the lock bars 36, 37. The function of the lock bars and ring nut is augmented by providing tapered noses 62, 68, on the lock bars which are fitted to enter correspondingly shaped recesses in the ring nut 60. This cooperative engagement is well shown in Fig. 2. Y

The strainer head also includes a front member which is marked 64, and is pierced throughout substantially its entire area by apertures 65. The cross-sectional area of these apertures is larger near their forward or outer portions so as to facilitate the escapeV of the material therethrough. A screen 66 is inserted between the front end of the inner member 7 and the front member 64.

This front member 64 is held in place by a. ring 67 that is secured within the ring nut 60 by a radially disposed set of shear pins 68. The provision of these shear pins is desirable because experience has shown that, occasionally, the pressure within the strainer head will become so great as to tear the ring nut off the outer member or jacket, thereby damaging the parts. The strength thereby,

Yof the shear pins 68 is calculated so that they will give way before a pressure whichy would dislodge the ring nut 60 as approximated.

Vbetween sections of thread, as indicated in dotted lines at 69, in Fig. 1. This provides a sort of breech-block lock engagement whereby the lock nut may first be forced axially substantially of its seated position on the halves 24, 25, and then, by a short movement in a rotaryy direction, be screwed home. This is a feature of some importance because the strainer head is va device which requires frequent disassembling for'cleaning7 and, occasionally, for repair or replacement of the screens. Y

As the ring nut 60,'and ring 67 carried are sometimes of considerable weight, I have seatedv a band 70 in a peripheral groove formed in the ring nut 60v and fitted a bolt 71 in the upper ends of the band, which bolt may be engaged by the hook of suitable tackle for temporarily supporting the nut 'while it is being adjusted into vposition by the workman.

As the operation of the above described to anyone skilled in the art, it is not deemed necessary to include a statement thereof. n

- It will be understood that various changes may be resorted to in the form, construction, and arrangement of the several parts, without departing from the spirit and scope of my invention; hence, I do not'intend to be limited tothe details herein shown and described except as they may be included in the claims. Y

IVhatI claim is:

l. A strainer head including an inner member, a surrounding plate for supporting the same, anda thread and shoulder on the member and'plate coacting 'to secure the member and plate together.

2. A machine of the characterdescribed comprising, a head, an inner member for the strainer head, a plate secured to the machine head and surrounding said member, and oppositelyfacing shoulders formed on said member, the one for abutting engagement with the machine head 'and' the otherA for abutting engagement with the plate. Y

8. A machine of the character described* comprising, a head, an inner member for the strainer head, a plate secured to the machine head and surrounding said member, opposite- Y ly facing shoulders formedon said member, the one for abutting engagement with the machine head and the other for abutting engagement with the plate, anda screw thread- 4 einem ibeigrsaid imemloer being provided .Withflongitudinally disposed ,rows f of -ipenforations7 and passages-intermediatesaidzrows or'the Cireulation of a temperature controlling medium 5 (therein.

5. A-strainerhead including an innerniemlier, said-member being iprovided avith longi- `tudinallyfdisposed -roWs `of -perforations and having formed thereina pluralityof .L1-shape 10 :paSSages 'forthe circulation-of aftemperature lcontrolling medium 41therein, each of saidU- 'shape passages surrounding a :row of @perfofrations. ,Y

r6. A strainerhead includinganrinnervinember-havingitswall composedoflongitudinalvly disposed portions, said portions beingaL iternatelyperforateandilnperforate,iandpas- Sages formed A:in said -iniperforate lvportions for the inflow and outflow of-a.temperature 'eontrollingfniedium- ,7. lAstrainer headfincluding, an inner inemfber, said member having an enlarged rear iportiomand means for circulating' ayt-empera- 'ture Controlling medium iintheaneniber, said '-25 :meansincluding'longitudinallyY disposed passages formed;inthe;member,and annular pas sages formed in itsfenlargedfrear portion.

8. A strainer head-including a jacket eem-` Vposedof-a (plurality of fparts, andfaring nut T Aadapted ;to iengage the said parts when ,in

Y operative position .for looking them in said position, said `nut and parts being provided Awith complementary ,interrupted Y tthreaded portions fforieonstitutinga breech-block lock. 9. A,-strainerhead includinga vjacket eomiposed-.ol .a plurality :of yparts, and; a ring :nut -fadapted ato engage the said parts rWhen Yin .operative position kfor looking :them in -said positionysaid nut and .parts being provided 40 with complementary interrupted conical threaded portions for constituting a `conical zbreeehablockfloek. Y

-10. Astrainer head including/cylindrical ,inner andouter membersarrangedinspaeed relation rforestablishingr a lChamber therebe- 1 tween, and diametrioally opposed partitions ,removably secured Abetween said members for :supporting said outer yinemberand dividingFV the Chamber into a'plurality goflongitudinal semi-cylindricalparts.

In testimony, that vI Claimzthe foregoingas amy invention, .I have signed imy name this third dayV of August 1927.

'-,vEnNoN iRoYILE. 

